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Albums from Invisible System, fusing Ethiopian and Jamaican music with distinctly British festival sounds, sometimes veer between the overcrowded and the thin.

Tiga Tej Tibs has the balance right: spare when Mimi sings against a krar with her Azmari band; rollicking ritti from Juldeh Camara on “JuDa”; thumping trance beats and Pygmy vocalisations from Baka Beyond on “Invisible Beyond”.